Add AsyncFlush when transferbuffer is > a certain size

gpu/command_buffer/client/transfer_buffer.cc

Index: gpu/command_buffer/client/transfer_buffer.cc
diff --git a/gpu/command_buffer/client/transfer_buffer.cc b/gpu/command_buffer/client/transfer_buffer.cc
index 28bb0e6461b5187fdef2a0806c1cc6e63e2ce89c..df2811f80f7cb5da1332bda8b6901715194d9023 100644
--- a/gpu/command_buffer/client/transfer_buffer.cc
+++ b/gpu/command_buffer/client/transfer_buffer.cc
@@ -18,7 +18,9 @@ TransferBuffer::TransferBuffer(
       result_size_(0),
       min_buffer_size_(0),
       max_buffer_size_(0),
-      alignment_(),
+      alignment_(0),
+      size_to_flush_(0),
+      bytes_since_last_flush_(0),
       buffer_id_(-1),
       result_buffer_(NULL),
       result_shm_offset_(0),
@@ -34,11 +36,13 @@ bool TransferBuffer::Initialize(
     unsigned int result_size,
     unsigned int min_buffer_size,
     unsigned int max_buffer_size,
-    unsigned int alignment) {
+    unsigned int alignment,
+    unsigned int size_to_flush) {
   result_size_ = result_size;
   min_buffer_size_ = min_buffer_size;
   max_buffer_size_ = max_buffer_size;
   alignment_ = alignment;
+  size_to_flush_ = size_to_flush;
   ReallocateRingBuffer(starting_buffer_size - result_size);
   return HaveBuffer();
 }
@@ -53,6 +57,7 @@ void TransferBuffer::Free() {
     result_buffer_ = NULL;
     result_shm_offset_ = 0;
     ring_buffer_.reset();
+    bytes_since_last_flush_ = 0;
   }
 }
 
@@ -66,6 +71,10 @@ RingBuffer::Offset TransferBuffer::GetOffset(void* pointer) const {
 
 void TransferBuffer::FreePendingToken(void* p, unsigned int token) {
   ring_buffer_->FreePendingToken(p, token);
+  if (bytes_since_last_flush_ >= size_to_flush_ && size_to_flush_ > 0) {
+    helper_->Flush();
+    bytes_since_last_flush_ = 0;
+  }
 }
 
 void TransferBuffer::AllocateRingBuffer(unsigned int size) {
@@ -149,6 +158,7 @@ void* TransferBuffer::AllocUpTo(
 
   unsigned int max_size = ring_buffer_->GetLargestFreeOrPendingSize();
   *size_allocated = std::min(max_size, size);
+  bytes_since_last_flush_ += *size_allocated;
   return ring_buffer_->Alloc(*size_allocated);
 }
 
@@ -164,6 +174,7 @@ void* TransferBuffer::Alloc(unsigned int size) {
     return NULL;
   }
 
+  bytes_since_last_flush_ += size;
   return ring_buffer_->Alloc(size);
 }